	US 11,981,874 B2
	Dewatering of thermochemical oil
Anne-Charlotte Hällgren, Sollentuna (SE); Nils Anders Nilsson, Järna (SE); and Tomasz Janosik, Huddinge (SE)
Assigned to PREEM AKTIEBOLAG, Stockholm (SE)
Appl. No. 17/615,480
Filed by PREEM AKTIEBOLAG, Stockholm (SE)
PCT Filed Jun. 4, 2020, PCT No. PCT/EP2020/065525 § 371(c)(1), (2) Date Nov. 30, 2021, PCT Pub. No. WO2020/245296, PCT Pub. Date Dec. 10, 2020.
Claims priority of application No. 19178936 (EP), filed on Jun. 7, 2019.
Prior Publication US 2022/0145190 A1, May 12, 2022
Int. Cl. C10G 7/04 (2006.01); C10G 7/08 (2006.01)

CPC C10G 7/04 (2013.01) [C10G 7/08 (2013.01); C10G 2300/1011 (2013.01); C10G 2300/4006 (2013.01); C10G 2300/4012 (2013.01)]

11 Claims

1. A process for producing a dewatered thermochemical oil comprising:

a) providing a thermochemical oil comprising water;

b) adding a solvent selected from mesityl oxide, 2-methyltetrahydrofuran, dioxane and furfural to the thermochemical oil, to form a mixture comprising the thermochemical oil and the solvent;

c) heating the mixture to remove an azeotrope comprising water and the solvent from the mixture, thereby forming a dewatered thermochemical oil,

wherein the heating is performed at a temperature of less than 80° C. and under a pressure in the range from 10 to 100 mbar.